Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 729 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) turmeric powder (d) a white flower
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) food colour (d) a mirror
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
8. 8.True or false: a piece of foil does not let water climb. (a) True (b) False
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
10. 10.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.True or false: a piece of foil lets water climb up it. (a) False (b) True
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a balloon
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a mirror
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a few hours of waiting
17. 17.True or false: a paper towel lets water climb up it. (a) False (b) True
18. 18.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
19. 19.True or false: a glass marble lets water climb up it. (a) False (b) True
20. 20.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a rubber eraser
21. 21.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
22. 22.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: a cotton thread does not let water climb. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a paper towel (d) a plastic ruler
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
29. 29.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a steel spoon (d) a rubber eraser
30. 30.True or false: a rubber eraser lets water climb up it. (a) True (b) False
31. 31.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
33. 33.💧 Which of these does not let water climb? (a) a piece of chalk (b) a steel spoon (c) a flower stem (d) a sugar cube
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
35. 35.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
38. 38.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a plastic ruler (d) a strip of cloth
39. 39.True or false: a steel spoon does not let water climb. (a) True (b) False
40. 40.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a piece of chalk (d) a strip of cloth

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